This site offers, in pdf format, hordes of Gov. docs which we need to have for posterity.
They include:
National Security Strategies ( one printed for each year)
National Defense Strategies
National Military Strategies
Other National Strategies
Major Defense Document
example:
The White House: National Security Strategy for a Global Age, Washington DC, December 2000 (pdf)
outlined the global plans of USA imperialism, taken from PNAC,